# STC SA1889WE

- Type: Supplemental type certificate
- Status: Current, Issued
- Holder: Sperry Phoenix Company, United States
- Description: Installation of Sperry SP-50G automatic flight control system, Sperry SPI-73E integrated instrument system and Sperry ATS-500 automatic throttle system.
- Status date: January 1, 1960
- Product: Aircraft, Large Multi-Engine
- Certification basis: Part 21
- Data sheets: [TCDS A12EA](https://openairdocs.org/tcds/A12EA)
- FAA DRS: https://drs.faa.gov/browse/excelExternalWindow/40447C6706507CBD862570C70074B38A.0001
- DRS record last changed: December 6, 2025
- Page: https://openairdocs.org/stc/SA1889WE

## ADs that name it (0)

None.

## Approved models (1)

- Gulfstream Aerospace Corporation G-1159 ([TCDS A12EA](https://openairdocs.org/tcds/A12EA))

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